Six years ago after the birth of her first son, Laura Lentz started experiencing some minor asthma-like symptoms. "I thought I was just out of shape from pregnancy," said Lentz, 37, a resident of Evanston, Ill. "I didn't know what was going on but it wasn't bad enough to do whatever about it." Two years later, after the birth of her second son in 2007, Lentz's infirmity became a great deal worse. "I was having severe shortness of breath and stomach pains," Lentz said. "I ended up in the ER and they took a CT scan of my lungs and found some cysts. That's what eventually led to my diagnosis...

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